Updated for iTunes 10.4!
This is going to get really painful to update in the future. Despite iTunes now being a Cocoa app, it still uses the archaic resource file for various UI elements. However, all of the publicly available resource file editors are PowerPC apps, meaning you can't run them on Mac OS X 10.7 Lion. How Apple plans to maintain these files is beyond me. Maybe they have a secret copy of RedEdit running in-house? Anyone have any ideas?